Class: BELParser::Parsers::AST::Argument

Inherits:

Node

• Object
• AST::Node
• Node
• BELParser::Parsers::AST::Argument

Defined in:

lib/bel_parser/parsers/ast/node.rb

Overview

AST node representing an argument.

Instance Attribute Summary

Attributes inherited from Node

#character_range, #complete, #line_number

Attributes inherited from AST::Node

#children, #hash, #type

Instance Method Summary

• #child ⇒ Object

  Get the Parameter or Term child.

• #initialize(children = [], properties = {}) ⇒ Argument constructor

  New Argument AST node.

• #parameter? ⇒ Boolean

  Does the argument have a Parameter child?.

• #term? ⇒ Boolean

  Does the argument have a Term child?.

Methods inherited from Node

#add_syntax_error, #append, #children?, #complete?, #concat, #first_child, #fourth_child, #freeze, #incomplete?, #num_children, #range_end, #range_start, #second_child, #syntax_errors, #third_child, #traverse, #updated

Methods inherited from AST::Node

#==, #append, #concat, #dup, #eql?, #inspect, #to_a, #to_ast, #to_bel, #to_s, #to_sexp, #updated

Methods included from BELParser::Parsers

#serialize

Constructor Details

#initialize(children = [], properties = {}) ⇒ Argument

New Argument AST node.

See Also:

• Node class for basic properties

# File 'lib/bel_parser/parsers/ast/node.rb', line 532

def initialize(children = [], properties = {})
  super(Argument.ast_type, children, properties)
end

Instance Method Details

#child ⇒ Object

Get the Parameter or Term child.

# File 'lib/bel_parser/parsers/ast/node.rb', line 547

def child
  children[0]
end

#parameter? ⇒ Boolean

Does the argument have a Parameter child?

Returns:

• (Boolean)

# File 'lib/bel_parser/parsers/ast/node.rb', line 537

def parameter?
  children[0].is_a?(Parameter)
end

#term? ⇒ Boolean

Does the argument have a Term child?

Returns:

• (Boolean)

# File 'lib/bel_parser/parsers/ast/node.rb', line 542

def term?
  children[0].is_a?(Term)
end